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**CS8281 NEATsx (386SX) (82C811/812/215/206) c:Dec89
***Info:
The CS8281 NEATsx CHlPSet, which is composed of four VLSI devices, is
a high-performance, 100%-compatible enhanced implementation of the
control logic used in the IBM PC AT. The flexible architecture of the
NEATsx CHIPSet allows it to be used as the basis for any
386sx-compatible system.
The CS8281 NEATsx CHIPSet provides a complete 386sx PC/AT compatible
system, requiring only 24 logic components plus memory devices.
The CS8281 NEATsx CHIPSet consists of the 82C811 CPU/bus controller,
the 82C812 page/interleave and EMS memory controller, the 82C215
data/address buffer, and the 82C206 integrated peripherals controller
(IPC).
The NEATsx CHIPSet supports a local CPU bus, a 16-bit system memory
bus, and the AT buses as shown in the NEATsx system block diagram [see
datasheet]. The 82C811 provides synchronization and control signals
for all buses. The 82C811 also provides an independent AT bus clock
and allows for dynamic selection between the processor clock and a
user~selectable AT bus clock. Because command delays and wait states
are configured by software, peripheral boards are provided with
maximum flexibility.
The 82C812 page/interleave and EMS memory controller provides an
interleaved memory subsystem design with page mode operation. It sup-
ports up to 8MB of DRAM with combinations of 256Kb and 1Mb DRAMs. The
processor can operate at 16 MHz with 0.7 wait state memory accesses,
using 100 nsec DRAMs. This is possible through a page interleaved
memory scheme. A RAM shadowing feature allows faster execution of
EPROM stored BIOS code by downloading and executing code from RAM. in
a DOS environment memory above 1MB can be used as EMS memory.
The 82C215 data/address buffer provides buffering and latching between
the local CPU address bus and the peripheral address bus. It also
provides buffering between the local CPU data bus and the memory data
bus. Parity bit generation and error detection logic resides in the
82C215.
The 82C206 integrated peripherals controller is an integral part of
the NEATsx CHIPSet. It is described in the 82C206 data book.
System Overview
The CS8281 NEATsx CHIPSet is designed for use in 12-16 MHz 80386 based
systems and provides complete support for the IBM PC AT bus. Four
buses are supported by the CS8281 NEATsx CHIPSet: the CPU local bus (A
and D); the system memory bus (MA and MD); the I/O channel bus (SA and
SD); and the X bus (XA and XD). The system memory bus provides an
interface between the CPU and the DRAMs and EPROMS controlled by the
82C812. The I/O channel bus refers to the bus supporting the
AT-compatible bus adapters which can be either 8- or 16-bit devices.
The X bus is the peripheral bus to which the 82C206 IPC and other
peripherals are attached in an IBM PC AT.
***Configurations:...
***Features:...
**CS8283 LeAPset-sx (82C841/82C242/82C636) c:Mar90...
**CS8285 PEAKsx (82C836/82C835) c91...
**CS8288 CHIPSlite-sx (82C836/82C641/82C835) c?...
**CS4000 WinCHIPS (64200/84021/84025) c92...
**CS4021 ISA/486 (84021/84025) c92...
**CS4031 CHIPSet (84031/84035) 5/10/93...
**CS4041/5 CHIPSet (84041/84045) 2/10/95...
**CB8291 ELEAT [no datasheet] c90...
**CB8295 ELEATsx [no datasheet] c90...
**82C100 IBM PS/2 Model 30/Super XT ?...
**82C110 IBM PS/2 Model 30/Super XT ?...
**82C235 Single Chip AT (SCAT) c89...
**82C836 Single Chip 386sx (SCATsx) <91...
**F8680/A PC/CHIP Single-Chip PC c93...
**
**Support Chips:
**64200 (Wingine) High Performance 'Windows Engine' c:Oct91...
**82C206 Integrated Peripheral Controller c86...
**82C601/A Single Chip Peripheral Controller <08/30/90...
**82C607 Multifunction Controller <Jun88...
**82C710 Universal Peripheral Controller c:Aug90...
**82C711 Universal Peripheral Controller II c:Jan91...
**82C712 Universal Peripheral Controller II c:Jan91...
**82C721 Universal Peripheral Controller III c:May93...
**82C735 I/O Peripheral Controller With Printgine c:Jul93...
**82C835 Single CHIP 386sx AT Cache Controller c:Apr91...
**F87000 Multi-Mode Peripheral Chip 11/23/93...
**Other:...
**Disk:...
**Video:
F64300 Wingine DGX 2MB, (appears to be a VLB version adapted from the proprietary 64200)
F64310 Wingine DGX 2MB (appears to be a PCI version adapted from the proprietary 64200)
OC65540 VGA BIOS c:95
OC65545 VGA BIOS same as 540 but has hardware overlay feature.
94C2001 PUMA (Programmable Universal Micro Accelerator) 50MHz Video accelerator
82C840 8514/A clone
82C9001A Video controller
82C404 Programmable clock synthesizer
82C402 VGA clock Synthesizer
82C411 Flat panel color pallet/DAC
82C425 82C425 CGA, CRT+LCD support, greyscale on LCD, supports two softfonts (up to 8x16 pixels) allowing 512 characters on screen, no snow
82C426 82C426 CGA, CRT, color LCD+AT&T400 support, max 32KB RAM
82C450 82C450 1MB VRAM, max 800x600 256color
82C451 82C451 VGA 256KB DRAM, max 800x600 16color c:90
82C452 82C452 1MB DRAM, max 640x480 256color, 1024x768 16color
82C453 82C453 1MB DRAM, max 800x600 256color
82C455 82C455 256KB DRAM Flat Panel version
82C456, 456A 82C456 256KB DRAM Flat Panel/CRT
82C457 82C457 Full color
82C45x series are VGA
'The 655xx series chips are SVGA video controller chips for flat panel
displays and CRTs. They also provide some level of CGA, MDA, EGA, and
Hercules compatibility, and various accelerator features. They are
designed with various features for reducing power consumption and
optimizing display quality.
source:http://www.igl.ku.dk/~fsp/varia/ct5xx.html
see the above source for more details.
82C481 True-Color Graphics Accelerator Wingine?
F65510 65510 LCD / CRT
F65520 65520 1MB D/VRAM, Full color, max 1280x1024 16color & 800x600 256 color
F65525 65525 LCD / CRT
F65530 65530 1MB D/VRAM, Full color, max 1280x1024 16color & 800x600 256 color, VLB
F65535 65535 LCD / CRT
F65540 65540 same as 65545 but without BitBLT and hw cursor
F65545 65545 mobile, 512-1024KB DRAM, ISA / PCI / VLB
65546 65546
F65548 65548
F65550 65550 HighQV32, mobile, 1-2MB DRAM, PCI / VLB
B65554 65554 HighQV64, mobile, 1-4MB DRAM, BGA
F65555 65555 HighQVPro, mobile, 1-4MB EDO, BGA
F68554 68554 HiQVision
F68555 68555
F69000 69000
M69000 69000 HighQVideo, mobile, 83MHz RAM, 2MB SDRAM on die, PCI / AGPx1, 135MHz RAMDAC, BGA, MiniBGA
F69030 69030 HighQVideo, mobile, 100MHz RAM, 4MB SDRAM on die, PCI / AGPx1, 170MHz RAMDAC, BGA, MiniBGA
*Contaq . . . . . [no datasheets, some info]...
*Efar Microsystems [no datasheets, some info]...
*ETEQ...
*Faraday...
*Forex . . . . . . [List only, no datasheets found]...
*Intel...
**82395SX Smart Cache 12/17/90
***Notes:...
**82396SX Smart Cache 12/17/90...
**82485 Turbo Cache (and 485Turbocache) c90...
**82489DX Advanced Programmable Interrupt Controller 10/12/92...
**82495DX/490DX DX CPU-Cache Chip Set <Sep91...
**82495XP/490XP Cache Controller / Cache RAM (for i860) 06/05/91...
**82496/491 Cache Controller / Cache RAM (for P5 Pentium) 03/22/93...
**82497/492 Cache Controller / Cache RAM (for P54 Pentium) <Nov94...
**82498/493 Cache Controller / Cache RAM (for P54 Pentium) <Nov94...
**
**Later chipsets (basic spec):
**440 series:...
**450NX (?) 06/29/98:...
**????? (Profusion) c:99...
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